With their immense strength, superhuman endurance, and magical abilities, oni are formidable adversaries. Oni have played a prominent role in Japanese folklore and mythological narratives. They are believed to originate from the Buddhist underworld and are considered as punishers of sinners.

oni, in Japanese folklore, a type of demonic creature often of giant size, great strength, and fearful appearance. They are generally considered to be foreign in origin, perhaps introduced into Japan from China along with Buddhism.

Translating to “demon” or “ogre,” Oni are integral to Japanese folklore and mythology, often linked with malevolence and believed to inhabit caves or secluded mountainous regions.

The origins of Oni are not entirely clear, but they are believed to have emerged from a blend of Shinto, Buddhist, and Taoist beliefs in ancient Japan. Over time, Oni have taken on various forms and characteristics depending on the region, period, and purpose of the storytelling.